Agnus

Agnus is a supporting character in Devil May Cry 4, a stuttering scientist and high-ranking official in the Order of the Sword. Agnus serves as the chief technology researcher and alchemist of the Holy Knights. Only few people of the Order know about him and his scientific research with demonic powers.

Devil May Cry 4
Agnus was tasked to develop demon-eradicating weapons for the Holy Knights such as the iconic Durandal and Caliburn swords worn by all of the Knights, like Credo. Although the Order of the Sword is dedicated for exterminating all demons, Agnus is authorized by Sanctus, the Order's leader, to conduct scientific experiments with demonic powers. His research facility is located under Fortuna Castle in Lamina Peak, in order to avoid being detected by unwanted trespassers. The pivotal elements in Agnus's research are Vergil's blade Yamato, fragments of the "dark angel" (presumably Nelo Angelo) and Hell Gates. In order to summon demonic entities from the Demon World, Agnus constructed three Hell Gates on Ferrum Hills, Fortuna Castle and Mitis Forest as the lesser duplicates of the "true Hell Gate" located outskirts the Castle Town of Fortuna. The lesser Hell Gates allowed countless demons, including Berial, Bael, Dagon and Echidna, enter Fortuna and infest the environment of the island. Utilizing the experiments, Agnus created numerous artificial demons, including the Gladii, Cutlasses, Basilisks by "cross-breeding" animals with weapons and the Bianco Angelos by allowing captured human and demon souls to possess the Order's armored suits. As the result, he often uses the Gladius, Cutlass, and Basilisk demons as his weapons. However, Agnus's greatest accomplishment was the Ascension ceremony, which allowed the members of the Order to become demons. The Holy Knights that participated in the ceremony were transformed into the Alto Angelos, while Agnus and Credo possess the angelic demon forms. Agnus's demon form is known as "Angelo Agnus the One-eyed Dark Knight".

Agnus is first seen in the Headquarters of the Order of the Sword as Sanctus, assassinated by Dante, is resurrected through the Ascension ceremony, gaining demonic powers in the process. Agnus arrives to Ascension chamber and congratulates His Holiness for recovering, but he is also somewhat nervous and even enraged, because Credo sent Nero to bring Dante to justice. Agnus considers Nero's journey to capture the infamous devil hunter a potential threat, because Nero could discover the Order's laboratory under Fortuna Castle and expose Agnus's research. However, Credo states that the Order's highest priority is to capture Dante for now. Agnus's greatest fears are proven correct as Nero stumbles upon Agnus's research facility, only to be sealed inside a containment room. Agnus appears to introduce himself to Nero, but then he sends the Gladii in to kill the intruder. Nero breaks the protective glass in the chamber and interrogates Agnus, who is fascinated by Nero's Devil Bringer. Agnus explains how a few years ago Sanctus ordered him to start his research, because Sanctus is plotting to take over the world by harnessing demonic powers. Nero comments to Agnus that Dante killed Sanctus, but the scientist responds by saying that Sanctus has been resurrected. Suddenly, Nero is nailed on the wall by the Bianco Angelos, and Agnus explains how challenging was to summon and capture demons. Nero realizes that Agnus created the lesser Hell Gates, and the researcher introduces his plans for using Nero as his newest test subject. When Nero refuses, Agnus stabs him with a Gladius sword and orders the Bianco Angelos to dispatch him. Agnus's attempt to kill Nero triggers his Devil Trigger, restoring the broken Yamato in the room and destroying the Bianco Angelos. Shocked at this turn of events, Agnus transforms into the demon form and escapes to the Order's HQ building.

Agnus meets the Order's officials, Sanctus, Credo and Gloria, and accuses Credo that he was aware of Nero's demonic powers. Credo dismisses accusations, even though Agnus informs him that Nero resurrected the Yamato. Credo is send to arrest Nero and reclaim the blade on Sanctus's suggestion, and Agnus informs Sanctus that Nero is apparently close to Credo's younger sister Kyrie, as he heard Nero shouting her name in the research facility. After Nero defeats Credo and Kyrie is disturbed by his Devil Bringer, Agnus arrives to the scene and comforts her by saying that he is trying to protect Kyrie. He explains that His Holiness had foreseen Credo's defeat in Nero's hands and ordered Kyrie to be used for Sanctus's further plans. Agnus takes his demon form, kidnaps Kyrie and flies away to the HQ. Nero pursues Agnus to save Kyrie and challenges the scientist to a fight. Despite his demonic powers, Agnus is defeated by Nero and the Bianco Angelos arrive to distract Nero. Sanctus, appearing as an Alto Angelo, instructs Agnus to "prepare for activation". Afterwards, Kyrie and Nero are absorbed in The Savior, Sanctus reclaims the Yamato, Credo is mortally wounded by Sanctus and The Savior is activated. In his final moments, Credo asks Dante to stop Sanctus and Agnus, and Dante decides to fulfill his dying wish.

Agnus opens the true Hell Gate, once sealed by Sparda, with the Yamato and unleashes countless demons to wreck the Castle Town of Fortuna and terrorize the citizens. As part of Sanctus's plans, he uses the power of The Savior is annihilate the demons. At the same time, Dante destroys the lesser Hell Gates. Agnus is waiting for further instructions in an opera house in the Castle City of Fortuna, when Dante comes to the town to claim the Yamato. Agnus and Dante first act out a mocking play before engaging in battle. Ultimately Agnus is defeated by Dante. Dante explains that he was the victor, because Agnus had surrendered humanity for demonic power. Agnus left puzzled at why his demon form is still inferior to the half-demon Dante, who says that demons are missing something that humans have. Agnus becomes puzzled begging for Dante to reveal the weakness, but Dante shoots the research notes with Ivory making the scientist panic. Agnus peers into the hole on the notes, made by Ivory's bullet, and witnesses Dante pointing him with the pistol. Dante mockingly instructs the scientist to "do his homework first" if he is going to continue his research in afterlife. Dante pulls the trigger and shoots Agnus in the eye, killing him. Afterwards, Dante reclaims the Yamato and uses the sword to shatter the true Hell Gate.

Personality
Agnus is secretive, introverted and a workaholic, rarely appearing to others. His introverted nature is emphasized by the fact that he is almost always seen in a hunched position, writing notes to his notebook. One of Agnus's distinctive characteristics is a speech impediment that causes him to stutter from time to time; he often stutters if he is angered or under stress. Normally, Agnus speaks with a soft voice, but sometimes he speaks with darker, menacing voice, usually when in his demon form. Judging by his behavior, Agnus appears to be temperamental and easily offended; for example, when Nero mockingly comments that Order's research facility is a "hellhole" and wonders Agnus's presence in the laboratory, the scientist is insulted to the point where Agnus warns Nero to "watch his words". Agnus is also seen clashing with Credo, Supreme General of the Holy Knights. However, he is extremely obedient to Sanctus, obeying his commands and never questioning Sanctus's will. He speaks to Sanctus with a respectful and obsequious, sometimes even flattering, tone. According to Agnus's dialogue with Dante, he has misanthropic views, criticizing stubbornness and foolishness of the human nature.

Despite Agnus' large size, apparent brawn (in both forms) and intellect, he is extremely cowardly. In many instances, he uses his summoned demons to attack you and uses his demon form mostly only as a means of escape. Another example of his cowardice is when he uses Kyrie when facing Nero.

Angelo Agnus the One-eyed Dark Knight
Agnus possesses a demon form, referred to as the "One-eyed Dark Knight" or Angelo Agnus. The "one-eyed" part of his title comes from a large red spot on his face in place of his left eye, where his monocle would be in human form. Agnus's demon form is based on that of a locust, a common symbol of demons and plagues in the Bible. He has long horns, a halo-like appendage over his head and an insectoid tail sprouting from the back of his head. As a demon he is able to summon his self-created Gladii, Cutlass and Basilisk demons to do his bidding and aid him in combat. . Agnus can also summon a burst of deadly fireballs and drain the player character's health points to replenish his own vitality.

Background

 * The Agnus Dei ("Lamb of God" in Latin; a traditional title for Jesus Christ) is the fifth part of the Catholic Ordinary of the Mass. It is traditionally sung in Latin.


 * The name of Mission 17 originates from Adagio for strings, a work for string orchestra, arranged by the American composer Samuel Barber from his first string quartet. In 1967 he transcribed the piece for eight-part choir, as a setting of the Agnus Dei.

Trivia

 * The research notes that Agnus is always carrying with him have the heading "Nero = Dante ???". Because he already has these notes before he meets Nero for the first time in Mission 6, it is possible that he was studying Nero from a distance previously.  However, this is somewhat inconsistent with his reaction during said Mission, in which he expresses surprise at Nero wielding demonic power. It could also be because of Nero's apparent resemblance to Dante.
 * When you fight Angelo Agnus (Both Nero & Dante), he sometimes will shout "Woot! Woot!" when he attacked you.